yonglam

#import <Foundation/Foundation.h>

typedef void (^RCTaskBlock)(NSString *keyPath, id object, NSDictionary *change);

@interface TZReceptionist : NSObject
+ (id)receptionistForKeyPath:(NSString *)path
                      object:(id)obj
                       queue:(NSOperationQueue *)queue
                        task:(RCTaskBlock)task;
@end

yonglam

'''
phone number regex
-------------------'''

def isPhoneNumber(text):
	if len(text) != 12:
		return False #not phone number-sized
	for i in range(0, 3):
		if not text[i].isdecimal():
			return False